If you're planning a trip to Arizona's Grand Canyon, don't forget to check out this nifty little pool in its depths. But be warned! The water within is toxic.

PHOENIX (AZFamily) — Major trails at the Grand Canyon ... said this can host its own set of problems. “As of right now our utility crews have to fly in via helicopter to Roaring Springs ...

An emergency situation at the Grand Canyon forced the closure of inner corridor trails, including the Bright Angel Trail, park officials said.

GRAND CANYON VILLAGE, Ariz. — All inner canyon trails at the Grand Canyon reopened after a chlorine gas leak at Roaring Springs ... from across Arizona. Users can also watch on-demand videos ...